کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5427127 1508620 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reflection and transmission of Laguerre-Gaussian beams in a dielectric slab
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی طیف سنجی
پیش نمایش صفحه اول مقاله
Reflection and transmission of Laguerre-Gaussian beams in a dielectric slab
چکیده انگلیسی


- Reflection and transmission of LG beam incident on a dielectric slab are described.
- Analytical expressions of total reflected and transmitted fields are derived.
- Effects of beam-waist radius and topological charge on intensities are simulated.
- Centroid shifts of reflected beam are presented and discussed.

This paper considers the reflection and transmission characteristics of a Laguerre-Gaussian (LG) beam in a dielectric slab. The fields of the reflected and transmitted beams are described based on plane-wave angular spectrum representation. Using the generalized Fresnel amplitude reflectance and transmittance, the reflected and transmitted fields in each region are expressed. With the Taylor series approximation of reflectance and transmittance, the analytical expressions of the total reflected and transmitted fields in the input and output regions are derived. The effects of the beam-waist radius and topological charge on the reflected and transmitted field intensities are simulated and discussed in detail. The centroid shifts of the reflected beam are also presented. It is concluded that the distortion of the intensity distribution including the size of the intensity contour, is influenced by the beam-waist radius and the topological charge of the incident beam. The total intensity of the slab, in particular for the case of the transmitted field, is found to be distinguishable from the case of the single interface.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 195, July 2017, Pages 35-43
نویسندگان
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